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Fix ChatGPT not loading in multiple tabs (due to Performance.measure Error)

Fixes ChatGPT failing to load when you open several tabs. Some sessions crash because of bad `Performance.measure` calls used for analytics. This script safely overrides `Performance.measure`, skipping invalid calls so the site loads normally while leaving your experience unchanged. Fully commented; questions and feedback welcome.

You will need to install an extension such as Tampermonkey, Greasemonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install an extension such as Tampermonkey or Violentmonkey to install this script.

You will need to install an extension such as Tampermonkey or Userscripts to install this script.

You will need to install an extension such as Tampermonkey to install this script.

You will need to install a user script manager extension to install this script.

(I already have a user script manager, let me install it!)

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You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install an extension such as Stylus to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

You will need to install a user style manager extension to install this style.

(I already have a user style manager, let me install it!)

🚀 安装遇到问题?关注公众号获取帮助

公众号二维码

扫码关注【爱吃馍】

回复【脚本】获取最新教程和防失联地址

Аўтар
12centuries
Усталяванняў за дзень
0
Усяго ўсталяванняў
6
Рэйтынг
0 0 0
Версія
0.1
Створаны
10.11.2025
Абноўлены
10.11.2025
Памер
1.9 КБ
Ліцэнзія
MIT
Ужываецца на

Fix ChatGPT not loading in multiple tabs

  • Is your ChatGPT not working?
  • Are you trying to run it in multiple tabs?

This might be the solution you need.

ChatGPT does a lot of internal performance monitoring and analytics functionality on your chat sessions, and if you have multiple browser tabs open, they can sometimes result in errors that prevent the site from working at all.

This script intercepts and neutralizes the problematic Performance.measure call that prevents ChatGPT from opening in multiple tabs. It does this by intercepting calls to `Performance.measure` and making sure that the values used are valid. If not, it simply skips the process. All that is lost is OpenAI's ability to track it's website performance, but it return, you can once again use ChatGPT in multiple tabs. As an end user, you won't notice anything different.

The userscript is fully commented to allow you to understand what is going on. If anything doesn't make sense to you, post a question and I'll be happy to explain in more detail.

While this is not my first userscript, it is my first published userscript, so feedback is always welcome!